Find an equation for the ellipse described.Foci at (0, ±5); y-intercepts are ±8
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
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Solve the problem.Bert is 16.5 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 3 kilometers per hour. They meet in 3 hours. How fast is Brenda walking?
A. 3 kilometers per hour B. 3.5 kilometers per hour C. 4.5 kilometers per hour D. 2.5 kilometers per hour
Multiply.
w8
A. 
w14 + 2w12 - 
w8
B. 
w6 + 2w4 - 
C. 
w14 - 2w12 + 
w8
D. 
w14 + 
w12 - 
w8
Solve.While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 518.4 newtons when the car is moving at a speed of 80 kilometers per hour and the passenger has a mass of 90 kilograms, find the force a passenger experiences when the car is moving at 60 kilometers per hour and the passenger has a mass of 100 kilograms.
A. 360 newtons B. 288 newtons C. 396 newtons D. 324 newtons
The name of a property is given followed by part of an equation. Complete the equation to the right of the equal sign to illustrate the given property.8 + (s + 7) =associative property of addition
A. (s + 7) + 8 B. (8 + s) + 7 C. 8 + (7 + s) D. (s + 8 ) + 7